This task extracts a single column from an array.

Example


; Start the application
e = ENVI(/HEADLESS)
 
; Get the task from the catalog of ENVITasks
Task = ENVITask('ExtractColumnFromArray')
 
; Define inputs
Task.INPUT_ARRAY = [[1,2,3], [4,5,6]]
Task.INDEX = 0
 
; Run the task
Task.Execute
Print, Task.COLUMN
 
; IDL prints: 1, 4

Syntax


Result = ENVITask('ExtractColumnFromArray')

Input properties (Set, Get): INDEX, INPUT_ARRAY

Output properties (Get only): OUTPUT_COLUMN

Properties marked as "Set" are those that you can set to specific values. You can also retrieve their current values any time. Properties marked as "Get" are those whose values you can retrieve but not set.

Methods


This task inherits the following methods from ENVITask:

AddParameter

Execute

Parameter

ParameterNames

RemoveParameter

Properties


This task inherits the following properties from ENVITask:

COMMUTE_ON_DOWNSAMPLE

COMMUTE_ON_SUBSET

DESCRIPTION

DISPLAY_NAME

NAME

REVISION

TAGS

This task also contains the following properties:

INDEX (required)

Specify a zero-based index number that corresponds to the column to extract.

INPUT_ARRAY (required)

Specify the input URI.

OUTPUT_COLUMN

This is the extracted column.

Version History


ENVI 5.6

Introduced

API Version


3.7

See Also


ENVITask, ExtractRowFromArray Task